On April 9, 2026, OpenAI said on X that it is introducing a new $100/month ChatGPT Pro tier aimed at heavier Codex use. OpenAI says the existing $200 Pro tier will remain the highest-usage option while Plus usage is being rebalanced toward more sessions across a week.
On April 7, 2026, OpenAI’s Tibo Sottiaux said Codex reached 3 million weekly users. He added that the jump from 2 million to 3 million took less than a month, and OpenAI will reset usage limits at each additional million users until the product reaches 10 million weekly users.
OpenAI's current Codex rate card now maps credit usage to input, cached-input, and output tokens instead of relying only on rough per-message estimates. The April 5, 2026 Hacker News thread focused on how that gives teams clearer cost visibility, while also leaving a split world where some plans use the new token-based card and others remain on the legacy message-based card until migration.
OpenAIDevs said on April 4, 2026 that developers can move from project setup to deployment with the Vercel plugin in the Codex app. The post aligns with OpenAI’s Codex plugin documentation and Vercel’s late-March rollout of plugin support for OpenAI Codex and Codex CLI.
OpenAI said on April 2, 2026 that ChatGPT Business and Enterprise teams can now add Codex-only seats with usage-based pricing instead of paying a fixed seat fee. OpenAI also cut annual ChatGPT Business pricing from $25 to $20 per seat and said Codex usage inside Business and Enterprise has grown 6x since January.
OpenAI said on March 31, 2026 that it closed a $122 billion funding round at an $852 billion post-money valuation. The company used the announcement to present consumer reach, enterprise growth, API usage, Codex adoption, and compute access as one reinforcing AI platform flywheel.
OpenAI Developers said recent Codex usage data suggests developers are handing off long-running work like refactors and architecture planning at the end of the day. In a follow-up reply, the account said tasks started at 11 pm are 60% more likely than other tasks to run for 3+ hours.
OpenAIDevs pointed developers to Codex Security on March 29, 2026, positioning it as a way to find, validate, and remediate likely vulnerabilities in connected GitHub repositories. OpenAI's docs say the system scans commit by commit, uses repo-specific threat models, validates high-signal findings in an isolated environment, and can move reviewed findings toward GitHub pull requests.
OpenAI Devs said on March 26, 2026 that plugins are rolling out in Codex, letting the agent work with common tools such as Slack, Figma, Notion, and Gmail. OpenAI's Codex docs describe plugins as reusable bundles that package skills, app integrations, and MCP server settings, turning Codex into a more shareable workflow layer for teams.
OpenAI says GPT-5.4 is its most capable and efficient frontier model for professional work, with stronger reasoning, coding, and computer use. The release spans ChatGPT, the API, and Codex, and pushes the context window to 1 million tokens.
OpenAIDevs said on March 27, 2026 that Codex usage limits had been reset across plans so users could try newly launched plugins. OpenAI's Help Center says Codex is temporarily available on Free and Go, paid plans are getting 2x rate limits, and plugins package reusable workflows built from skills, app integrations, and MCP configurations.
OpenAI said on March 19, 2026 that it will acquire Astral, the company behind uv, Ruff, and ty. The move is meant to push Codex from code generation toward the broader Python development workflow.